The Washer,flat, cataloged under National Stock Number 5310-00-167-0704, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-167-0704 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | CANCELLED |
| Overall Diameter | 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 268 OR COPPER ALLOY 11 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Thickness | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NAS1149B663H | 5/9 Secondary reference U.S. Government activity |
| NAS1149B063H | 5/9 Secondary reference U.S. Government activity |
| NAS1149B0663H | 3/2 Design control — primary reference U.S. Government activity |
| 5310001670704 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| AN960B616 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-167-0704 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: cancelled.
1 possible match (shared part number, not a government interchangeability claim): 5310-00-331-3225. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-167-0704: Overall Diameter: 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5310-00-167-0704 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.